I know nothing about transmissions, but I love watching your videos. You just breeze through these transmissions explaing everything so well. You make these so easy to watch. Keep it up.
Great videos. I own three G.M. classics with Muncie 4-speed with 3.73 gears in each. Thanks to your videos I now have a better understanding on how my transmission is working and what it's doing as I run through the gears. Your special attention in rebuilding these transmissions turns them into a work of art. your a true craftsman.
Thanks again Paul for the great build on my M22 drag speacial .it's got over 40 hits on it now and still working perfect . It's holding up to 800 hp very well!
Working on a Mechanical Engineering degree and need to be studying for a test on Monday and I'm watching you tear down this M-22...Great videos man..Thanks for sharing your knowledge....Can't get enough of this...
I know exactly what you're talking about, 2.20 first gear with 3.08 rear = dog terrible acceleration and some clutch slipping. Everybody used to get these on their new Z-28's with the 302 that had no low end torque and wondered why they couldn't beat anyone. Even with the 3.73 gears they came with it was not enough overall first gear ratio to get moving that well. Once you put in a 4.56 gear then things got better. Great info Paul, I have an autographed copy of your book and love it and your videos, thanks for doing these things for us.
I've recently been interested in getting a C3 corvette but before diving in I wanted to know more about fixing the car. Your videos are nothing short of amazing. Thank you!
He speaks my language , I like quality and I like how he knows what is right ,and he really comes off like he enjoys what he does .....I will call no one else when my trans money comes in.....new subscriber .....enjoy your work sir
I've done over 50 of these back in the day. Had to learn to disassemble these blindfolded! My favorite was the very special M20HD with a 390 rear gear and a 2:54 first gear and the big main shaft. TH400 Tail...
You do an excellent job explaining the reasons why you do the things you do . Very refreshing to see a professional do quality work . I love your videos . We need alot more people on the planet like you .thank you so very much j,Nichols okc . Keep up the very fine job you are doing . Top shelf all the way .
I love the ratio explanation. I prefer a wide gear spread and an engine with a ton of torque and a highway friendly gear of 3.08-3.31. Makes for a fun street car. I had a 74’ Z28 with an M21 with 3.73 rear and while it was fun on the street, it was not fun on the highway. 3000rpm at 63/65 mph was tedious
I have a 1966 Chevelle with a 427 and a manual shift Turbo 400 that has worked well but I’d like to change it to a 4 speed for the second half of its life. It’s my first car that I bought 42 years ago. I just discovered that you sell new M22’s. That’s fantastic. I bought your book too! Thanks
@@GearBoxVideo I can wait. I have 3 different cars that could use a manual transmission. 2 66 Chevelles and a 1970 Monte Carlo so it will be a fun project. I have your book too. They all have automatics so it should be fun to finally have a Rock Crusher. Best transmission name ever! Thanks
Dude!! U are a bad ass!! I need to rebuild my m21 again and I gonna rebuild using your tips and methods cuz I don't think i did it rite the first time....thank u for making g these very educational videos.....I appreciate you sharing your valuable knowledge...
Came from EricTheCarGuy and boy, I really enjoy your videos. Your personality and the way you show stuff really gets my attention. I have a manual transmission conversion thing going on and have to check what you got to offer. Thanks and keep up the good work!
Thanks for producing this video! Answered questions I've thought about for years. BTW, I'm buying your books because of this video, wouldn't have known about them otherwise. Thanks again!
Great video!! I really appreciate when an experienced, knowledgeable builder shares their experience with us all...like going to school. Keep them coming.
Wow Paul, That was an excellent video pointing out sub par parts and WHY they are sub par pieces. I like how you corrected the bolt holes for clearance issues (I didn't know that could be an issue and I've got a '63 Nova). I'm going to come see you on my transmission rebuild - either I'll get one of your new ones or have you rebuild mine and strengthen it up and put the correct gear ratios inside it for a better driving experience. Thanks for the great info!
+GearBoxVideo Paul, BTW I subbed to the channel, Glad I found it,, I really like gear boxes so to get to see videos on a subject you like is always nice.
Paul, Your videos are the best...Great production values and solid information....You must be creating an army of muncie rebuilders!!! Can't wait to dig into mine and find out whats going on!!!
Another great video to go along with your excellent book! Thanks for taking a lot of the mystery and myths out of transmission rebuilding. Really appreciate your time to share this information, and thanks for exposing the fraudulent and misrepresented parts.Quality, experience, and pride in workmanship.I will be upgrading soon!
Fantastic video. Youre knowledge and experience really are teaching me so much about manual transmissions. Im considering a new m22 fom my Chevelle. Im running 4.10 gears, with a 400 hp small block, and an M21. Its a fun street car that isnt driven more than 1000 miles a year. I crave the old school whine of the m22. Dont need one, but really want one. Thanks for another fine video.
You cannot put a price on the advice and info here. Amazing how some people figure a way to get a deal on speed equipment is off of E-Bay. Only to find out it ends up in a scrap bin. Or in this case, Paul chucked the Taiwanese 'parts' into a cardboard box. I bought my M23Z direct from AutoGear in Syracuse NY. To my defense, I didn't know about 5Speeds the time I ordered from AutoGear. If I had, my Stingray would of had one of Pauls Spec25 versions of a Muncie 4-speed. In any event, cheap parts aint good and good parts aint cheap. Paul was very gracious to lend his advice on whether the Z ratio would work with a 3:36 posi rear gear ratio. My SLR is 10 to 1 with this set up, so 1st gear is fairly short. With all the steep terrain where I drive in the mountains out West that first gear comes in handy. My Corvette has excellent street manners and is a blast to drive now. Before, with the stock M21 ratio, I was either lugging or over-speeding the engine. Or breaking the speed limit by double. Over all a huge improvement in drive-ability. Thanks once again Paul, great video learning center.
My first car was a 70 Chevelle ls5 Chevelle ,I bought it in 1975 it had a 4:11 rear what should the first gear been ,the car would always wheel hop bad when you would come out of the hole.im not much of a mechanic but loved your video.it was a m22 rock crusher
gary, here again and another great video when i started my build and started looking for parts made the mistake of ordering a few parts off a co. on ebay seems like i always got to learn the hard way so now all my parts come from gearbox i make a purchase and they arrive in a couple of days ,i live in ohio so iam a few miles away butt so far gearbox has been good to me ,so keep up the good work and you are making pros out of all of us .
And this is why guys like this are in high demand- Very few want to excel in rebuilding gearboxes-Especially automatic transmissions which are even more complicated......If I excelled in the aret of building transmissions- Id want a minimum of $35 per hour as an employee plus benefits and all the overtime I could handle- Build 3-4 of these week.
Hi Paul,I am working on my 2nd Muncie rebuild. Thanks to you, this one will be more thoroughly done. You not only have the technical knowledge, but also the proper pace and clarity to keep it interesting and easy to follow. I built an Olds 350 W-31 replica. I used an M20 and 3:42 gears. Most of these cars were built with 3:91'S. I have trouble launching ( the car weighs 4200 lbs) but it really screams from 2nd on. Would you suggest a rear gear change or a first gear ratio change? If so what? Thank you
When I was 18/19 I had the chance to buy an HG Holden sedan (1970 Australian GM) with a 307 Chev and a 4 speed gearbox my father advised me not to buy it as the gearbox had a terrible whine. Many years later I found out that the gearbox was a Muncie Rock Crusher M22, I still haven't forgiven my father , 40 years after the fact and 20 years after he passed away
I remember reading a Chevrolet TSB (technical service bulletin) That told mechanics that had encountered cars with multiple pre-mature clutch wear on M-21 M-22 equipped vehicles to check for a minimum axle ration of 4.56:1 in order to be covered by warranty. For those of you not familiar with TSBs let me explain, These were basically secret documents from G.M. engineers to the dealer mechanics explaining to them how to fix in the real world what they screwed up on paper. The TSBs were issued for Dealer Mechanics Eyes Only.
+biscaynenick Yes I have some copy of TSB's. Sad thing is that the issues were checked in cars that came in for other repairs avoiding the embarrassment of recalls.
Great to see a pro call out all these counterfeit parts from other countries, there's no comparison. Will they work,? The video shows the wear on the shift forks from a few miles to shift forks I've pulled from boxes with thousands of miles and no visible wear. These inferior parts are garbage, I deal with this frustrating issue all the time.
Great video thanks for the info. Only thing I didnt agree with was the direction the snap-ring was installed on the input shaft. I always preferred sharp side out to help prevent the possibility of it popping out of the groove. Maybe more of a pet peeve than incorrect, but I'm a stickler lol
If you install it as you say , pliers will not be able to remove them. The ring is cut that way so it doesn't slip off pliers. If your so concerned about this, just use Tru arcs instead.
Paul-you mentioned trans gear ratio suited for the axil ratio. If the M-22 your are rebuilding was going into a Nova with 4-11's in the rear would you have to re-gear the M-22 and to what gear ratio?
My '05 Mustang GT was geared (stock) for fast 0-60 time. First was 3.32 and the rear end was 3.55 for an effective 11.8 ratio. Red line in second was just over 60 mph. No wonder a test driver for one of the car mags got a 4.9 second 0-60 time.
I really enjoy your videos - it’s rare to see somebody who now so much about a gearbox, who willingly and in good video quality explains and gives great tips. I noticed in this video that the front bearing was lose and I have the same problem in my M21 gearbox. On the internet with all its experts some suggest “gluing” the bearing racer to the case with some Retaining Compound like the Loctite 660 or 680. Others suggest to punch a number of holes around the racer in the case - or maybe even a combination What is your take on a problem like this?
If the bearing is slip fit, that is acceptable and I just use red loctite. If it has up and down movement within the bore the case needs to be repaired. I don't use them if they are that bad.
Thanks for the tech talk,You make understanding a Muncie easier and gear ratios.Can you explain how I can tell what my transmission came out of.I bought 2 Muncie M-21s and 1 M-22 from a friend in his junkyard for $300. all of them were in decent shape but I would like to know what they came out of.Any hints?
Just found this video.. great info!! I have a m21 and I wonder what the he would charge for the parts and labor?? Great watching and very informational!
Very good Intel on your video! Could you tell me what would cause my M22 trans to vibrate, only when shifted into 3rd gear?! Other gears are fine! Also how much would it be to rebuild my trans?!👍😉🤙 Thanks!
Do they make a kit to remove a 4L60 out of say 2009 GM pickup and replace with a 4 speed or six speed that will hold up to being a work truck? Thank you for any ideas
The Midwest M23 is basically a build up of a standard Autogear M23 knock down kit that anyone can purchase and build themselves. There are several Muncie vendors that purchase these same kits and do their own builds. Each vendor I'm sure has their own set of talent and skill levels. Since these vendors have much more racing and transmission building experience than the people at Autogear, you are usually better off supporting authorized vendors. Autogear's current program is no longer allowing sales of sealed input shaft assemblies separately. So in order to get certain features you have to purchase a complete transmission or knock down kit. Since these kits only come with Aluminum bearing retainers ( which I do not like ) and cast aluminum mid plates ( also don't like ), I swap them out for my nodular Iron midplate and steel billet front retainers. Most of the knock down kit parts I don't use, I sell off. I personally never liked the "m23" branding. So my M22 DS ( drag special) is the same as the M23 but with the nodular iron plate, billet retainer and a bunch of other mods.
hey paul I have a stock just rebuilt t-5 and a 3.73 rear gear and want to go to a 3.31 gear to give me more top end speed, witch gear would give me the best performance or just the right gear for the t-5 to work correct with the right gear, I know the ford mustangs fox 1991 came with a 3.08 please help outstanding work to
My head hurts! I had no idea these gear boxes were so complicated. To think I used to just bang through gears and make the car go as fast as I could when street racing like my 428CJ with the 4 speed. Tore up the motor and a clutch once but not the gear box.
@@GearBoxVideo oh yea! They had to have to take my abuse. Ive been watching a lot of your vids and just watched one where you took apart the corvette overdrive unit. I cannot find the second half where you said you were going to put it back together. Did you get side tracked on that one? I've been bing watching your vids the last few days staying up all hours. I am learning a lot but there are things that I don't get, like I used to think the gears were slid around on the shaft but they don't and its the synchros that slide. What I don't get is it looks like some of them are not on splines to turn them. Hopefully I can skip the test lol.
I'm having this exact problem on a Amazon m22 kit..1/2 is hitting my idler..how do I fix that....where do I get the collar that has the seal in it...thank you
Very very well presented. Excellent sound and clearly shown details. This stands out in comparison to other RU-vid articles. I have the original Muncie in a 67 Corvette which is drenched in oil from leaks. I plan to drop it out and rebuild it. Can the internals be replaced with the stuff you showed here to produce a stout M20 or M21? Can I do it? I have rebuilt a couple in the past, but of course, I am nowhere knowledgeable as much as you are. Will it require any machining for the new parts? Do you have the part kits for me to do this? Thank you and keep up the great work. Salut
Yes you can upgrade gearsets. People purchase upgrade sets from me every week. The old M21 ratio is not that desirable compared to the better ratios offered in the M22 line. You can do it!
Awesome vid bro now i get whats wrong with my set up do you deliver to Canada i need some parts. thanks for the time and effort to make these there golden.
Very informative showing the different qualities of what you use vs the after market. It shows you get what you pay for.In the future I will have you build an M22 for me, love the gear whine. Happy Holidays to you and your Family
Sealed systems have front and rear seals and need a vent to relieve pressure and vapors. Non sealed systems have no front seal and use an oil slinger to divert oil and a passage to vent the case.
I have this really weird thing happening in my 94 GTR. I like to drive with the AC off and windows down, and I noticed that my gearbox sounded noisy when shifting, and my gears felt and sounded crunchy. No grinding. It all goes away when I drive with my AC on, except for the sound underneath my car. Shifting is smoother and it doesn’t crunch.
